Each year, the corporation has to have certain director meetings and shareholder meetings that follow the strict rules that are set out in the Business Corporations Act (Alberta), unless all of the directors and all of the shareholders sign written resolutions instead of having those meetings.
With a small, closely-held corporation, the directors and shareholders will typically sign written resolutions in lieu of holding formal meetings. They can, and often do, still have informal meetings.
In addition, each year, the corporation also has to file an annual return with Corporate Registry. This is different than the tax return that your accountant will file for the corporation.